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If you mean the displays are kind of fuzzy at a partiuclar resolution, try changing the refresh rate. Whenever you install XP, refresh rates default to 60 Hz - this is rarely the optimum for the display. Most displays operate best from 70-75 Hz or possibly higher. Right click on the desktop, observe DISPLAY PROPERTIES window. Select the SETTINGS tab, highlight the display you wish to modify, then click the ADVANCED button. Select the MONITOR tab. Use the SCREEN REFRESH RATE pull-down to select the refresh rate you need. Be advised, if you select a rate the monitor cannot handle you will lose visual on the display and could damage the monitor. You can avoid this by selecting the "HIDE MODES THAT THIS MONITOR CANNOT DISPLAY: check box.

The steps are depending on the operating system you use. Assuming that you have Windows XP, follow these steps: right click on an empty place at your desktop, choose properties, choose the settings tab, click on the button "for advanced users" and click on the tab "screen". Change the refresh rate as you wish.Note: Always check the box "Hide the refresh rates not supported" in order to avoid setting that your monitor can't handle. In any case of choosing a refresh rate that come to a black screen DON'T DO ANYTHING. After some seconds (about 15) the screen will come to the previous setting.

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In Internet Explorer, Just click on View and Click on Refresh. Thats all there is to it!
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Yavacotech

It means that the display settings of your computer (resolution, refresh rate) have been set beyond the monitor's capabilities. It's best to boot Windows in Safe Mode, then you should get the picture ok, and set the display settings according to your monitor's optimum resolution and refresh rate.